body{
    width: 100%;
}


.picvideo{
   position: relative;
}
.picvideo img{
    height: 300px;
}
.picvideo .picback{
    position: absolute;
    top: 15px;
    left: 10px;
    font-size: 26px;
    color: honeydew;
}
.picvideo .picplay{
     position: absolute;
     top: 150px;
     left: 164px;
     font-size: 34px;
     font-weight: 700;
     color: honeydew;   
}
h2{
    font-size: 22px;
    margin-left: 20px;
}
ul {
    width: 100%;
    color: gray;
    padding: 20px;
}

.trainintroduce{
    height: 50px;
    line-height: 50px;
    justify-content: space-around;
    border-bottom: 1px solid gray;
}


.trainneed{
    flex-wrap: wrap;
    height: 150px;
}
.trainneed h4{
    height: 50px;
    line-height: 50px;
    word-wrap: break-word;
}
.trainneed .trainmsg{
    width: 50%;
    height: 80px;
    line-height: 40px;
}


.starttrain{
    width: 360px;
    height: 40px;
    border-radius: 20px;
    line-height: 40px;
    color: #fff;
    background-color: deepskyblue;
}